Patents by Inventor Gordon S. Duckworth

Gordon S. Duckworth has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: D275530
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: September 18, 1984
    Assignee: Prestons Ltd.
    Inventor: Gordon S. Duckworth